Assessment Results » Water Cycle
Individual Report: Robyn Scott
Student
1 2 3 4 5
Total
B D C A A
(5/5)
1. Which of the following contains the largest percentage of the Earth's water?
o A. Atmosphere
o B. Oceans
o C. Ice/Snow
o D. Vegetation
Correct Answer: B — Oceans
Explanation: Over 97% of the Earth's water is contained in its oceans.
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2. What is the defining characteristic of a water cycle?
o A. The water passes through at least five different locations.
o B. It does not include any human water usage.
o C. It passes through plants, animals and the ocean.
o D. It has the same starting and ending point.
Correct Answer: D — It has the same starting and ending point.
Explanation: While many different paths through the cycle are possible, the definition
of a natural cycle is that it begins and ends in the same place.
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3. What human activity uses the most water, worldwide?
o A. Drinking
o B. Industry
o C. Agriculture
o D. Bathing
Correct Answer: C — Agriculture
Explanation: About 70% of the water used by humans worldwide is used for
agricultural purposes. In highly industrialized countries like the United States, the
majority of water is used for industry.
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4. Where is the majority of the Earth's fresh water stored?
o A. In glaciers and icecaps
o B. In lakes
o C. In plants
o D. In the atmosphere
Correct Answer: A — In glaciers and icecaps
Explanation: Over 97% of the Earth's water is stored in its oceans. Most of the
remainder (just over 2%) is in glaciers and icecaps.
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5. What sequence of processes transports water from the ocean into a cloud?
o A. Evaporation and condensation.
o B. Condensation and freezing.
o C. Precipitation and condensation.
o D. Evaporation and precipitation.
Correct Answer: A — Evaporation and condensation.
Explanation: The Sun's energy causes water at the surface of the ocean to warm up
and evaporate. Warm air saturated with water vapor rises up into the atmosphere,
where it is cooled at higher elevations. The cooling of the saturated air causes water
vapor to condense into tiny water droplets and form a cloud.
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